The Geologist, Volume 6

animals appear Arigna basalt beds belong BLAINVILLE bones Boucher de Perthes boulders Breccia British Carboniferous Caverns Chalk character clay coal coal-field coal-measures containing Cretaceous Dendrerpeton deposits Devonian Diluvium discovery district drift earth Eocene epoch Equus evidence existence Falconer fauna feet fissures flint Foraminifera formation Foss fossil fragments genus Geol Geological Society geologists GERVAIS glacial Glen Roy Glyptolepis granite gravel hills Holoptychius Hybodus inches land Lias limestone Lower Greensand Lunel-Viel marl mass matter miles mineral Miocene molar mountain Museum nature Neocomian observed occur Oolite origin Ostéographie Owen Paléont Paléontologie paper period Permian PICTET plates Pliocene portion present probably Professor Red Sandstone remains remarkable ridge river rocks sand Sansan seams shale shells Silurian slates species specimens stone strata surface teeth Tertiary thickness tion Upper valley Wealden Zool